feat: add fetch repository if it not already exist in db (#530)

* feat: add fetch repository if it not already exist in db

* feat: add fetch repository if it not already exist in db

* style: go fmt

* style: go fmt

internal/dvserver/api.go

@@ -40,6 +40,18 @@ func (s *service) Graph(ctx context.Context, in *Graph_Input) (*Graph_Output, er
 		return nil, fmt.Errorf("load tasks: %w", err)
 	}
 
+	// fetch if not already in db
+	if len(tasks) == 0 {
+		_, err := dvcore.PullAndSave(filters.Targets, s.h, s.schema, s.opts.GitHubToken, false, s.opts.Logger)
+		if err != nil {
+			return nil, fmt.Errorf("pull: %w", err)
+		}
+		tasks, err = dvstore.LoadTasks(s.h, s.schema, filters, s.opts.Logger)
+		if err != nil {
+			return nil, fmt.Errorf("load tasks: %w", err)
+		}
+	}
+
 	// build output
 	ret := Graph_Output{
 		Tasks: make([]*dvmodel.Task, len(tasks)),